[Replacing the cutting spool] The 11 foot long cutting line offers a greater mowing range. Portable 0.065 inch diameter nylon cord provides quick and easy cutting and longer life. [Compatible with Greenworks] Replacement 0.065 inch spool is compatible with Greenworks 21222A 21602 . You need to confirm the model when selecting. [Single coil] Flexible bending and long life. Use centrifugal force and aerodynamics to reduce drag and cut quickly. The high quality aftermarket spool is strong enough to hold the spool firmly and keep it safe when mowing. [Handy tool] It snaps into place and can be replaced quickly and easily without tools. The pre-winding can achieve maximum reliability and uncompromising performance, is safer and faster than manual winding, reduces damage to the mower and does not get stuck when mowing. 【Tool Corded Lawn Mower Replacement】 Professional mower tools will save you a lot of time and energy to mow the garden lawn, making your garden cleaner and more beautiful. Product Compatible models: 21222A, 21602, 21062, 21132, 21242, 21282, 21302, 21332, 21262, 21312, 21342, 2100302 Coil material: 70% nylon + 30% fiberglass Size: 6pcs / 6pcs (optional) Package Included: 4 x Replacement String Trimmer Spools Note: Due to manual measurement, please allow difference of 0 to 3 cm. Thanks for understanding. The monitor calibration method is different. The color of the product shown in the photo may be slightly different from the actual product. Please refer to our size before ordering. Delivery quantity: 6 pieces